504 RHYNCHOPHORA. 
The antecoxal impression of the prosternum is broad and almost straight, not “W%-shaped as in P. rugicollis. 
The ¢-mark on the first abdominal segment is very small and placed close to the apical edge. 
Hab. Costa Rica, Irazu (Rogers); Panama, Volcan de Chiriqui (Champion).— 
Vewnezueta; Guiana; Braziu}, Rio Negro, Goyas, Sta. Catherina. 
This insect is apparently rare in Central America, only three specimens being 
contained in the collection. 
4. Ptychoderes bivittatus. (Tab. X. fig. 4.) 
Ptychoderes bivittatus, Jordan, Nov. Zool. i. p. 594, n. 5 (1894) ’. 
The most distinct species of the genus, as regards coloration. The luteous white lateral vitte of the 
pronotum, which extend to the tip of the rostrum, are united on the latter into a single broad vitta, 
leaving the middle of the head brown. The central part of the pronotum is often shaded with white or 
luteous, excepting a trilobate brown posterior patch, which is occasionally reduced to two oblique brown 
streaks. While each elytron bears a conspicuous tubercle before the apex in the three preceding species, 
the apices are simply rounded-declivous in P. vittatus. There is no d-mark on the first abdominal 
segment. 
Hab. Mexico}, Jalapa, Bobo (Hége), Toxpam (Sallé); GuateMaLA, Panzos in Vera 
Paz (Champion); Nicaracua 1, Chontales ! (Belt, Janson). 
II], HYPSELOTROPIS. 
Ptychoderes, Schoenherr, Gen. Spec. Cure. i. p. 120 (1833) (partim) ; Lacord. Gen. Col. vii. 
p. 488 (1866) (partim). 
Hypselotropis, Jekel, Ins. Saund. i. p. 65 (1855) (type: annulicornis) ; Jord. Stett. ent. Zeit. lvi. 
p. 124 (1895). 
Range: South and Central America. 
3 2. The rostrum is narrower and more cylindrical between the eyes and antenne than in Ptychoderes, and 
the lateral dorsal caring are rather more lateral. The antennal groove, too, is shorter, the posterior half 
of the groove being more or less obsolete. There are no thin carine on the frons between the mesial one 
and the eyes. The lateral carina connecting the antebasal carina of the pronotum with the basal edge 
of the prothorax is vestigial or absent. The legs are slender, especially the tarsi, the first anterior tarsal 
segment being always obviously longer than the second. 
Of the five species known, only one occurs in Central America. 
1. Hypselotropis albatus. (Tab. X. fig: 6.) 
Hypselotropis albatus, Jordan, Stett. ent. Zeit. lvi. p. 125. n. 5 (1895) °. 
Hab. Nicaracua, Chontales (Janson); Costa Rica, Bebedero 1 (Mus. Tring); Panama, 
Volcan de Chiriqui (Champion). 
There are only two females in the collection, which are fortunately in good 
condition, the species having been originally described from a somewhat abraded 
male. The femora and tibie of these females are reddish, as in the type. 
